One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(9,10)(11,15)(12,14)(13,16)(18,21)(19,23)(25,26,30,28,29,32,27,31)(1,2,4,5)(3,8,7,6)(9,11)(10,13)(12,16)(14,15)(17,18,20,21)(19,24,23,22)(25,27,29,30)(26,31,32,28)(10,14)(13,15)(17,19,20,23)(18,22,21,24)(25,28,30,32,29,31,27,26)(1,3,4,7)(2,6,5,8)(11,16)(13,15)(18,21)(22,24)(25,27,29,30)(26,31,32,28)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.